[thejeff]

The Ring, (or the Amulet, after they change) prevents them from losing hp every month once they're diseased and they regenerate up to full if they survive battle.

The bless requires you to send them into battle to heal, or to forge Shrouds so the bless applies outside of combat. With no native Astral access and likely better Nature income, Rings of Regen might be easier and effectively cheaper. And doesn't require you to take Nature, which you have plenty of on your pretender. (